Examine source code of Ghost Essence

{
  "theme": {
    "images": {
      "theme_frame": "tom_firefox2.jpg"
    },
    "colors": {
      "frame": "#6d8dde",
      "tab_background_text": "#79f2ce"
    }
  },
  "version": "2.0",
  "name": "Ghost Essence",
  "manifest_version": 2,
  "description": "Photo's of my cat Tom and a Lily I got in a bouquet :3"
}